void humid_sht_periodic(void)
{
uint8_t error = 0, checksum;
if (humid_sht_status == SHT_IDLE) {
/* init humidity read */
s_connectionreset();
s_start_measure(HUMI);
humid_sht_status = SHT_MEASURING_HUMID;
} else if (humid_sht_status == SHT_MEASURING_HUMID) {
/* get data */
error += s_read_measure(&humidsht, &checksum);
if (error != 0) {
s_connectionreset();
s_start_measure(HUMI); //restart
//LED_TOGGLE(2);
} else {
error += s_start_measure(TEMP);
humid_sht_status = SHT_MEASURING_TEMP;
}
} else if (humid_sht_status == SHT_MEASURING_TEMP) {
/* get data */
error += s_read_measure(&tempsht, &checksum);
if (error != 0) {
s_connectionreset();
s_start_measure(TEMP); //restart
//LED_TOGGLE(2);
} else {
calc_sht(humidsht, tempsht, &fhumidsht, &ftempsht);
humid_sht_available = true;
s_connectionreset();
s_start_measure(HUMI);
humid_sht_status = SHT_MEASURING_HUMID;
DOWNLINK_SEND_SHT_STATUS(DefaultChannel, DefaultDevice, &humidsht, &tempsht, &fhumidsht, &ftempsht);
humid_sht_available = false;
#if SHT_SDLOG
if (pprzLogFile != -1) {
if (!log_sht_started) {
sdLogWriteLog(pprzLogFile, "SHT75: Humid(pct) Temp(degC) GPS_fix TOW(ms) Week Lat(1e7deg) Lon(1e7deg) HMSL(mm) gspeed(cm/s) course(1e7deg) climb(cm/s)\n");
log_sht_started = true;
}
sdLogWriteLog(pprzLogFile, "sht75: %9.4f %9.4f %d %d %d %d %d %d %d %d %d\n",
fhumidsht, ftempsht,
gps.fix, gps.tow, gps.week,
gps.lla_pos.lat, gps.lla_pos.lon, gps.hmsl,
gps.gspeed, gps.course, -gps.ned_vel.z);
}
#endif
}
}
}
void humid_sht_periodic(void) {
uint8_t error=0, checksum;
if (humid_sht_status == SHT_IDLE) {
/* init humidity read */
s_connectionreset();
s_start_measure(HUMI);
humid_sht_status = SHT_MEASURING_HUMID;
}
else if (humid_sht_status == SHT_MEASURING_HUMID) {
/* get data */
error += s_read_measure(&humidsht, &checksum);
if (error != 0) {
s_connectionreset();
s_start_measure(HUMI); //restart
LED_TOGGLE(2);
}
else {
error += s_start_measure(TEMP);
humid_sht_status = SHT_MEASURING_TEMP;
}
}
else if (humid_sht_status == SHT_MEASURING_TEMP) {
/* get data */
error += s_read_measure(&tempsht, &checksum);
if (error != 0) {
s_connectionreset();
s_start_measure(TEMP); //restart
LED_TOGGLE(2);
}
else {
calc_sht(humidsht, tempsht, &fhumidsht, &ftempsht);
humid_sht_available = TRUE;
s_connectionreset();
s_start_measure(HUMI);
humid_sht_status = SHT_MEASURING_HUMID;
DOWNLINK_SEND_SHT_STATUS(DefaultChannel, DefaultDevice, &humidsht, &tempsht, &fhumidsht, &ftempsht);
humid_sht_available = FALSE;
}
}
}
void humid_sht_event( void ) {
if (sht_trans.status == I2CTransSuccess) {
switch (sht_status) {
case SHT_TRIG_TEMP:
sht_status = SHT_GET_TEMP;
sht_trans.status = I2CTransDone;
break;
case SHT_READ_TEMP:
/* read temperature */
tempsht = (sht_trans.buf[0] << 8) | sht_trans.buf[1];
tempsht &= 0xFFFC;
if (humid_sht_crc(sht_trans.buf) == 0) {
/* trigger humid measurement, no master hold */
sht_trans.buf[0] = SHT_TRIGGER_HUMID;
sht_status = SHT_TRIG_HUMID;
I2CTransmit(SHT_I2C_DEV, sht_trans, SHT_SLAVE_ADDR, 1);
}
else {
/* checksum error, restart */
sht_status = SHT_IDLE;
sht_trans.status == I2CTransDone;
}
break;
case SHT_TRIG_HUMID:
sht_status = SHT_GET_HUMID;
sht_trans.status = I2CTransDone;
break;
case SHT_READ_HUMID:
/* read humidity */
humidsht = (sht_trans.buf[0] << 8) | sht_trans.buf[1];
humidsht &= 0xFFFC;
fhumidsht = -6. + 125. / 65536. * humidsht;
ftempsht = -46.85 + 175.72 / 65536. * tempsht;
sht_status = SHT_IDLE;
sht_trans.status = I2CTransDone;
if (humid_sht_crc(sht_trans.buf) == 0) {
DOWNLINK_SEND_SHT_STATUS(DefaultChannel, &humidsht, &tempsht, &fhumidsht, &ftempsht);
}
break;
case SHT_RESET:
sht_status = SHT_SERIAL;
sht_trans.status = I2CTransDone;
break;
case SHT_SERIAL1:
/* read serial number part 1 */
sht_serial[5] = sht_trans.buf[0];
sht_serial[4] = sht_trans.buf[2];
sht_serial[3] = sht_trans.buf[4];
sht_serial[2] = sht_trans.buf[6];
/* get serial number part 2 */
sht_status = SHT_SERIAL2;
sht_trans.buf[0] = 0xFC;
sht_trans.buf[1] = 0xC9;
I2CTransceive(SHT_I2C_DEV, sht_trans, SHT_SLAVE_ADDR, 2, 6);
break;
case SHT_SERIAL2:
/* read serial number part 2 */
sht_serial[1] = sht_trans.buf[0];
sht_serial[0] = sht_trans.buf[1];
sht_serial[7] = sht_trans.buf[3];
sht_serial[6] = sht_trans.buf[4];
sht_serial1=sht_serial[7]<<24|sht_serial[6]<<16|sht_serial[5]<<8|sht_serial[4];
sht_serial2=sht_serial[3]<<24|sht_serial[2]<<16|sht_serial[1]<<8|sht_serial[0];
DOWNLINK_SEND_SHT_SERIAL(DefaultChannel, &sht_serial1, &sht_serial2);
sht_status = SHT_IDLE;
sht_trans.status = I2CTransDone;
break;
default:
sht_trans.status = I2CTransDone;
break;
}
}
}
